This is
NO PT Boat. This was a Hudson River "Ride Boat" masquerading as a PT Boat...capable of maybe 25 MPH.
The original US PT Boats had three (3) Packard 4M-2500 ..1200 HP engines. (Total 3600 HP) The last and most well known were the
Elco 80 footers. Next were the older Higgins 77 footers. Just sayin.
NB
PS: I observed the restoration of one of the last 80' Elcos in the 1980s. . It is currently at the Fall River Battleship Cove in Fall River, Mass. It has 3 original Packards.
PPS: I live 1.5 miles from the WWII PT Training Base in Melville, RI.